11.5
Date Code 20171021 Instruction Manual SEL-421 Relay
Relay Word Bits
Alphabetical List
59VDIF1 Circuit Breaker 1 synchronizing voltage difference less than limit 39
59VDIF2 Circuit Breaker 2 synchronizing voltage difference less than limit 41
59VP VP within healthy voltage window 38
59VS1 VS1 within healthy voltage window 38
59VS2 VS2 within healthy voltage window 40
67G1 Level 1 residual directional overcurrent element 33
67G1T Level 1 residual delayed directional overcurrent element 33
67G2 Level 2 residual directional overcurrent element 33
67G2T Level 2 residual delayed directional overcurrent element 33
67G3 Level 3 residual directional overcurrent element 33
67G3T Level 3 residual delayed directional overcurrent element 33
67G4 Level 4 residual directional overcurrent element 33
67G4T Level 4 residual delayed directional overcurrent element 33
67P1 Level 1 phase directional overcurrent element 31
67P1T Level 1 phase-delayed directional overcurrent element 32
67P2 Level 2 phase directional overcurrent element 31
67P2T Level 2 phase-delayed directional overcurrent element 32
67P3 Level 3 phase directional overcurrent element 31
67P3T Level 3 phase-delayed directional overcurrent element 32
67P4 Level 4 phase directional overcurrent element 31
67P4T Level 4 phase-delayed directional overcurrent element 32
67Q1 Level 1 negative-sequence directional overcurrent element 34
67Q1T Level 1 negative-sequence delayed directional overcurrent element 35
67Q2 Level 2 negative-sequence directional overcurrent element 34
67Q2T Level 2 negative-sequence delayed directional overcurrent element 35
67Q3 Level 3 negative-sequence directional overcurrent element 34
67Q3T Level 3 negative-sequence delayed directional overcurrent element 35
67Q4 Level 4 negative-sequence directional overcurrent element 34
67Q4T Level 4 negative-sequence delayed directional overcurrent element 35
67QG2S Negative-sequence and residual directional overcurrent short delay element 60
67QUBF Forward direction supervised output from 50QUBP 23
67QUBR Reverse direction supervised output from 50QUBP 23
79CY1 Relay in single-pole reclose cycle state 43
79CY3 Relay in three-pole reclose cycle state 43
79STRT Relay in start state 50
81D1 Level 1 definite-time frequency element pickup 392
81D1OVR Level 1 overfrequency element pick up 392
81D1T Level 1 definite-time frequency element delay 392
81D1UDR Level 1 underfrequency element pick up 392
81D2 Level 2 definite-time frequency element pickup 393
81D2OVR Level 2 overfrequency element pick up 393
Table 11.1 Alphabetic List of Relay Word Bits (Sheet 5 of 34)
Name Description Row
To Next Page
